For preventing freezes of UI, modify priorities for dispatching actions of UI elements.
Add new built-in theme "starry night".
Fix typo in about view.
Changing strategy of accessing database.
Optimize user loading.

Fix: activities were not loaded in last commit.
Fix: sometimes freezing user interface when scroll to top of timeline by wheel.
Apply mutes which specified in twitter official websites.

Improve behaviors of handling relations and blocked/no_retweet specified users.
Increment revision.